The president of the investigating chamber shall ensure the proper functioning of the investigating chambers within the jurisdiction of the court of appeal. In particular, he verifies the conditions of application of paragraphs 4 and 5 of Article 81 and article 144 and shall endeavour to ensure that proceedings are not subject to any unjustified delay. Whenever he deems it necessary, and at least once a year, he sends his written observations to the first president of the court of appeal, the public prosecutor at the said court, the president of the judicial court concerned and the public prosecutor at the said court.